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Back to active CVEs
High · CVSS 7.5CVE-2026-128082GHSA-6VHM-J9H7-F9GH

AutoMapper: Uncontrolled Recursion with Constructor ParametersCVE-2026-128082

Answer in brief

CVE-2026-128082 records a High severity (CVSS 7.5) vulnerability in AutoMapper: Uncontrolled Recursion with Constructor Parameters. The current sources do not mark it as known exploited. The current feed maps LuckyPennySoftware/AutoMapper (generic), AutoMapper (nuget), AutoMapper (nuget). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 13, 2026Updated Nov 13, 2026Source checked Nov 13, 2026First seen by HOL Nov 13, 2026Material review Nov 13, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-674
Source
CVE List V5
Source checked
Nov 13, 2026
References
6 linked sources
Open source record

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps LuckyPennySoftware/AutoMapper (generic), AutoMapper (nuget), AutoMapper (nuget). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
LuckyPennySoftware/AutoMappergeneric>=16.0.0 <16.3.0 || <15.1.415.1.4, 16.3.0
AutoMappernuget>=16.0.0,<16.3.016.3.0
AutoMappernuget<15.1.415.1.4

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for LuckyPennySoftware/AutoMapper, AutoMapper, AutoMapper.
  2. 2Review the reported fix. Update LuckyPennySoftware/AutoMapper to 15.1.4; AutoMapper to 16.3.0; AutoMapper to 15.1.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 13, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

AutoMapper is a convention-based object-object mapper in .NET. Prior to 15.1.4 and from 16.0.0 until 16.3.0, AutoMapper increments type depth only after creating the destination, so recursive mapping performed through constructor parameters occurs before MaxDepth is counted. Destinations built through positional records or other constructors, and recursive ConstructUsing mappings that call context.Mapper, can therefore bypass explicit MaxDepth values and the default limit of 64. Deep attacker-influenced input can throw an uncatchable StackOverflowException and terminate the process. This issue is fixed in versions 15.1.4 and 16.3.0.

Quoted source text, attributed separately from HOL analysis.